Land Rover Discovery P400eEngine Rebuild— From £2,800
Specialist Land Rover Discovery P400e engine rebuilds and replacements, with registration-based engine matching, nationwide recovery and a 12-month unlimited-mileage warranty
Rated Land Rover Engine Specialists — 1,800+ Engines Rebuilt
12 Month Unlimited-Mileage Warranty
Nationwide Recovery
Specialist technicians with 10-15 years of experience
Free Engine Matching by Registration
Ingenium AJ300P Specialists
Your Land Rover Discovery P400e Engine
Vehicle
Land Rover Discovery P400e
Model
Land Rover
Variant
Discovery P400e
Fuel
Petrol
Engine
[MISSING: engine code not independently confirmed in VRF]
Capacity
[MISSING: capacity not independently confirmed in VRF]
Generation
generation (2014–2025, discontinued)
Rebuild From
£3,200
Not sure which engine you have?
The Discovery P400e uses the engine 3.0-litre inline-six mild-hybrid engine — enter your registration below and we'll confirm your exact spec before you get a quote.
DVLA & VIN verified
100% secure & private
No obligation quote
Land Rover Discovery P400eEngine Rebuild Price
Starting From £2,800
Engine Code
Rebuild From
£2,800
Generation
Exact price depends on condition and parts required — submit your reg for a fixed-price quote.
Land Rover Discovery P400e Oil Leaks & Coolant System Wear (engine I6)
The engine is a sophisticated 3.0-litre inline-six with an integrated starter-generator and electric auxiliary compressor — a more modern and efficient design than the older engine V6. We replace timing chains, bearings, water pump and gaskets as standard on every engine rebuild.
Because the Discovery P400e uses a completely different engine family from the V8 M178 fitted to the Land Rover 63 and GT 63 S, parts and rebuild specifications don't cross over between them.
Source: Established engine specialist pattern — timing chain, bearing and gasket wear across integrated-starter-generator inline-six units.
Land Rover Discovery P400eENGINE OPTIONS
Every Discovery P400e is different. That's why we offer the right solution for your engine, your car and your budget.
REBUILDING YOUR Discovery P400e ENGINE
We rebuild the engine your Discovery P400e already has instead of selling you a used engine of unknown history — strip it down, pressure-test it, and replace every worn or damaged component (timing chains, bearings, water pump, gaskets) with updated OEM parts. Near-new performance with a 12-month unlimited-mileage warranty.
From £3,200RECONDITIONED Discovery P400e ENGINES
A full strip-down, inspection and replacement of worn parts rather than a straight swap. If that's what you're after, our rebuild service is exactly that.
Learn moreREFURBISHED Discovery P400e ENGINES
Restoring your existing engine to full working condition rather than replacing it outright. Our rebuild service covers this.
Learn moreREMANUFACTURED Discovery P400e ENGINES
Built to original specification with updated components. That's consistent with what our rebuild service delivers on the engine.
Learn moreREPLACEMENT Discovery P400e ENGINES
If your existing engine is beyond economical repair, we offer complete engine replacement and fitting – sourced and fitted by our team, with the same 12-month warranty.
Learn moreUSED Discovery P400e ENGINES
Matched low-mileage used engines for when time is critical. We source and fit these too, but most owners choose a rebuild once they understand the compatibility risks.
Learn moreNOT SURE WHICH OPTION IS RIGHT FOR YOU?
Enter your registration below and we'll confirm your engine and talk you through the best solution for your Discovery P400e, honestly.
Ask About Your Options
OUR WORKSHOP
01RECOVERY COLLECTION
02engine ENGINE STRIPPED FOR REBUILD INSPECTION
03VALVE COVERS & COOLANT COMPONENT WORK
04TECHNICIANS AT WORK
05ENGINE TESTING (RIG)
06COMPLETED & READY FOR REFIT
Real photos from our workshop — not stock imagery. This is what a genuine Land Rover Discovery P400e rebuild looks like.
Land Rover Discovery P400e ENGINE REBUILD PROCESS
WHAT MERCEDES Discovery P400e OWNERS SAY
WE COVER YOUREXACT VEHICLE
Enter your registration below and we'll confirm your Land Rover Discovery P400e has the right engine, along with an exact rebuild price.
WHY MERCEDES Discovery P400e OWNERS CHOOSE US
Engine matched using VIN or registration number
Genuine specialist workshop — not a broker
Specialist technicians with 10-15 years of experience
We don't swap your engine for an unknown used unit
Nationwide recovery, workshop rebuild
12 month unlimited-mileage warranty
All engine ancillaries serviced as part of the rebuild
Trade & public enquiries welcome
Dedicated advisor from quote to fit
OUR MOST RECENTMERCEDES RECOVERIES & REBUILDS
Real vehicles brought into our workshop. Open bonnets, stripped blocks, and cars ready for collection — this is what genuine engine work looks like.
Land Rover Discovery P400e
RECOVERY
Land Rover Discovery P400e
DIAGNOSTICS
Land Rover Discovery P400e
STRIPPED ENGINE
Land Rover Discovery P400e
TIMING CHAIN REPLACEMENT
Land Rover Discovery P400e
IN FOR REBUILD
Land Rover Discovery P400e
REBUILD IN PROGRESS
HOW IT WORKS
SEND YOURREGISTRATION
RECEIVE YOURFIXED-PRICE QUOTE
WE RECOVERYOUR CAR
REBUILD &REFIT
Most Land Rover models are recovered within a few hours of booking. Most rebuilds are completed within 3-5 working days.
Workshop slots fill up fast — book your recovery today.
LOOKING FOR A USED ORREPLACEMENT ENGINEINSTEAD?
We supply low-mileage, VIN-matched used units too, and offer full replacement and fitting. However, most Discovery P400e owners choose a rebuild once they realise it removes compatibility risk and works out more cost-effective over the life of the car.
Enter your reg below — we'll show you every option, honestly.
ABOUT THE Land Rover Discovery P400e ENGINE
The Discovery P400e is a plug-in hybrid variant of the current D5 generation, introduced in 2017. It uses the Ingenium AJ300P — a 3.0-litre inline-six petrol engine paired with an electric motor and battery. It is one of the few petrol options in the Discovery range, sitting alongside the diesel D250/D300/D350 and the petrol P360/P400. The P400e's powertrain is shared with other JLR models, and its petrol engine is known to be generally more reliable than its diesel Ingenium counterparts.
We continue to rebuild and replace engine engines for every Discovery P400e on the road.
Land Rover Discovery P400e ENGINE CODES
A 3.0-litre inline-six petrol fitted to the Discovery P400e from 2017 to present (D5/L462). This is the petrol PHEV engine for the Discovery range. There are no widely-reported known issues specifically for this engine in this application. Check Your Ingenium AJ300P Discovery P400e → [link to quote form]
Check Your engine Discovery P400eLand Rover Discovery P400e ENGINE COMPATIBILITY
Because the Discovery D5 shares the same AJ300P engine with other variants like the P400, and the range also uses different engines for diesel models (AJ300D) and the P360, it's critical to confirm your exact engine code before any work is carried out. Sourcing the wrong engine or assuming the same parts fit across the range can lead to compatibility issues. We always start with your registration to verify your Discovery P400e's exact engine code.
Your exact engine code (engine) via registration or VIN
Your generation (generation)
Drivetrain and ancillary specification
Any electronics or ECU considerations specific to your exact build
This is why we always start with your registration rather than a generic Land Rover quote — it protects you from paying for parts that don't fit your actual car.
Land Rover Discovery P400e APPLICATIONS BY GENERATION
Generation
Chassis
Years
Engine Code
Fuel
D5
L462
2017–present
Ingenium AJ300P
Petrol PHEV
Land Rover Discovery P400e ENGINES BY YEAR
Land Rover Discovery P400e has used the same engine throughout. If you're unsure of your exact spec, we'll confirm it before you book.
The engine has been fitted to every Discovery P400e since launch — if your registration year isn't listed above, get in touch and we'll confirm availability directly against your reg.
WE COVER EVERY Land Rover Discovery P400e MODEL YEAR:
Land Rover Discovery P400e
2017 Engine Rebuild
Land Rover Discovery P400e
2018 Engine Rebuild
Land Rover Discovery P400e
2019 Engine Rebuild
Land Rover Discovery P400e
2020 Engine Rebuild
Land Rover Discovery P400e
2021 Engine Rebuild
Land Rover Discovery P400e
2022 Engine Rebuild
Land Rover Discovery P400e
2023 Engine Rebuild
Land Rover Discovery P400e
2024 Engine Rebuild
Land Rover Discovery P400e
2025 Engine Rebuild
Land Rover Discovery P400e
2026 Engine Rebuild
If your registration year isn't listed above, get in touch — we'll confirm availability directly against your reg.
Land Rover Discovery P400e ENGINE COSTS
A Land Rover Discovery P400e engine rebuild starts from
£2,800
A full replacement engine and fitting service is also available. Exact pricing depends on the condition of your existing engine and the parts required — submit your registration for a fixed-price quote within 30 minutes.
12 MONTH
UNLIMITED-MILEAGE
WARRANTY
MERCEDES Discovery P400e ENGINE SIZES
• Land Rover Discovery P400e 3.0 Litre Engine (engine, I6)
MERCEDES Discovery P400e FUEL TYPES
• Land Rover Discovery P400e Petrol Mild Hybrid Engine Rebuilds
RELATED LAND ROVER ENGINES
Most Land Rover Discovery P400e engine rebuilds are completed within 3-5 working days.
Nationwide recovery and collection available for all Land Rover Discovery P400e models.